video record
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Description
Tne programme examines some of the principles behind the technique of ballistocardiography.
Metadata describing this Open University video programme
Module code and title: TM281, Modelling by mathematics
Item code: TM281; 10
First transmission date: 15-08-1977
Published: 1977
Rights Statement:
Restrictions on use:
Duration: 00:24:30
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Producer: Colin Robinson
Contributors: Keith Attenborough; David Denison; Nicolaas Westerhof; Willem Goedhard
Publisher: BBC Open University
Keyword(s): Anatomy; Cardiology; Heart
Footage description: Keith Attenborough introduces the programme. Film shots of a ballistocardiograph (Bcg) being taken. Attenborough, using a model, explains the theoretical basis of Bcg. Attenborough tries to draw a distinction between the clinician and the pure scientist in so far as motives for interest in Bcg are concerned. David Denison (Brompton Hospital) and Attenborough explain why Bcg is not considered to be a useful diagnostic technique in the U.K. Over shots of a Bcg machine at the Free University, Amsterdam, Attenborough explains how this system works. Shots of patient being monitored by this apparatus. Using a cut-away model of the human torso, David Denison points out the relevant parts of the heart's pumping action and of the circulation system. He particularly emphasises the direction of blood flow which is the basis for Bcg monitoring. Keith Attenborough points out some areas which would make interpretation of the Bcg results, for individual patients, difficult. He uses a conceptual model of the apparatus to help illustrate points made. Rico Westerhoff (Free University of Amsterdam) explains the steps taken by his team to work within the limits discussed above. Keith Attenborough, again using a conceptual mode of a Bcg system, discusses a way in which a quantitative interpretation of Bcg might be obtained with the methods employed at Amsterdam. Over shots of a patient wired up for a phonocardiogram and traces from an electrocardiogram, Attenborough and David Denison discuss these two other non-invasive techniques for monitoring the heart. An animated graph shows traces for these two and also for Bcg for a single patient. Wim Goedhard (Free University of Amsterdam) explains his line of research in trying to use Bcg to monitor cardiac ageing. A graph helps to illustrate points made. Attenborough and Goedhard then discuss, briefly, the place of Bcg among the other non-invasive monitoring techniques used in medicine. Denison and Attenborough explain why they think Beg has little value for mass screening of patients. Attenborough sums up.
Master spool number: 6HT/72494
Production number: 00525_5294
Videofinder number: 776
Available to public: no